Data / ENERGY STAR / Boilers / Radiant
Radiant ENERGY STAR certified boilers: 7 models
Radiant has 7 ENERGY STAR certified products in boilers on the EPA's list as read on November 4, 2026, which puts it number 30 of 51 brands by model count. Its newest certification is R2K 24, dated September 14, 2022.
SpecStream is the live web data engine for teams and agents. It reads the EPA's ENERGY STAR certified product lists, keyed on the ENERGY STAR Unique ID, and this page is that reading. Ask for the products you track by category, brand or rating, and each new certification arrives in your sheet, CRM, Slack or agent as the EPA publishes it.
- Certified products
- 7
- Newest certification
- September 14, 2022
- Brands in this category
- 51
Radiant certified boilers
Newest first. Each row links to the product's record in the EPA's open data portal.
| Model | Efficiency (AFUE) | ENERGY STAR ID | Certified | Source |
|---|---|---|---|---|
| R2K 24 | 96 | 2401468 | September 14, 2022 | data.energystar.gov |
| R2K 34 | 96 | 2401467 | September 14, 2022 | data.energystar.gov |
| R2K 55 | 96 | 2401465 | September 14, 2022 | data.energystar.gov |
| R2KA 24/20 | 96 | 2401464 | September 14, 2022 | data.energystar.gov |
| R1K 34/B | 96 | 2401463 | September 14, 2022 | data.energystar.gov |
| R2KA 34/20 | 96 | 2401462 | September 14, 2022 | data.energystar.gov |
| R1K 55 | 96 | 2401461 | September 14, 2022 | data.energystar.gov |
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Updated November 4, 2026. Read from ENERGY STAR certified product data, US Environmental Protection Agency (data.energystar.gov). Public domain data from the US EPA and the US Department of Energy. Products are listed as the EPA publishes them on the date this page was read, and the EPA can revise or withdraw a certification. A product is counted once, under the most specific list that holds it. For heat pumps each ENERGY STAR ID is one outdoor and indoor unit combination, so a model number can repeat. Brand names are as published. This page uses EPA data and is not endorsed or certified by the EPA or ENERGY STAR. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.